sister-in-law | BrE ˈsɪstərɪnlɔː, AmE ˈsɪstər ən ˌlɔ | noun plural sisters-in-law (sister of one's wife) 姨子 yízi ; (sister of one's husband) 姑子 gūzi ; (wife of one's older brother) 嫂子 sǎozi ; (wife of one's younger brother) 弟媳 dìxí ; (wife of one's husband's brother) 妯娌 zhóulǐ |